The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2014
Filed:
Mar. 09, 2009
Holger Moench, Vaals, NL;
Mark Carpaij, Aachen, DE;
Albert Comberg, Aachen, DE;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A sensor system is described, using self-mixing laser sensors () and an analyzer circuit () in order to determine the velocity of a vehicle, such as a car, and the rotational velocity of a wheel () of the car. Deviations between the velocity of the vehicle and the rotational velocity of the wheel () can be used to determine sliding of the wheel () and, finally, the traction or, more specifically, the coefficient of driving friction between the wheel () and the surface the car is driving on. Furthermore, a vehicle control system is described, initiating test accelerations of a wheel () by means of a control circuit () and control means () in order to determine the coefficient of driving friction during driving. The test accelerations initiate short periods of sliding of the wheel () and the sliding is detected by means of the sensor system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile